234244021 has 8 divisors (see below), whose sum is σ = 257652288. Its totient is φ = 212947900.

The previous prime is 234244019. The next prime is 234244061. The reversal of 234244021 is 120442432.

It is a happy number.

It is not a de Polignac number, because 234244021 - 2¹ = 234244019 is a prime.

It is a super-2 number, since 2×234244021² = 109740522748496882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234243983 and 234244001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234244001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86665 + ... + 89326.

It is an arithmetic number, because the mean of its divisors is an integer number (32206536).

Almost surely, 2^234244021 is an apocalyptic number.

It is an amenable number.

234244021 is a deficient number, since it is larger than the sum of its proper divisors (23408267).

234244021 is an equidigital number, since it uses as much as digits as its factorization.

234244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176024 (or 176002 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 234244021 is about 15305.0325383516. The cubic root of 234244021 is about 616.4381449176.

Adding to 234244021 its reverse (120442432), we get a palindrome (354686453).

The spelling of 234244021 in words is "two hundred thirty-four million, two hundred forty-four thousand, twenty-one".